Prevent all combat damage that would be dealt this turn if was spent to cast Batwing Brume. Each player loses 1 life for each attacking creature he or she controls if was spent to cast Batwing Brume. (Do both if was spent.)

Each player separates all nontoken lands he or she controls into two piles. For each player, one of his or her piles is chosen by one of his or her opponents of his or her choice. Destroy all lands in the chosen piles. Tap all lands in the other piles.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)